Chemistry College

A students drawing of a nitrogen atom is shown. What change would make the model more accurate?
A-move the electrons into the nucleus
B-add 2 more protons
C-show 7 neutrons in the nucleus
D-remove 2 electrons
(Please leave a small explanation)

A Students Drawing Of A Nitrogen Atom Is Shown. What Change Would Make The Model More Accurate?A-move

Answers

Answer 1

Answer:

C - show 7 neutrons in the nucleus

Explanation:

Use process of elimination:

-Answer A will not work because electrons are not in the nucleus.

-Answer B will change the atom's identity from nitrogen to fluorine; it will not work.

-Answer D will create a nitrogen ion, which is not what the prompt is asking for (an atom); it will not work.

The only logical answer is C, as that is the only one that is also true.

Related Questions

Diazomethane has the following composition by mass: 28.57% C, 4.80% H, and 66.64% N. The molar mass of diazomethane is 42.04 g/mol. Find the molecular formula of diazomethane.

Answers

Answer:

CH2N2

Explanation:

To find the molecular formula, we must first find the empirical formula as follows:

28.57% C - 28.57g of Carbon

4.80% H - 4.80g of Hydrogen

66.64% N - 66.64g of Nitrogen

Next, we convert this mass values to mole by dividing by their respective atomic mass.

C = 28.57/12 = 2.38mol

H = 4.80/1 = 4.80mol

N = 66.64/14 = 4.76mol

Next, we divide each mole value by the smallest mole value (2.38mol)

C = 2.38mol ÷ 2.38 = 1

H = 4.80mol ÷ 2.38 = 2.01

N = 4.76mol ÷ 2.38 = 2

The empirical ratio of C, H and N is therefore 1:2:2. Hence, the empirical formula is CH2N2

To calculate the molecular formula;

(CH2N2)n = 42.04 g/mol

{12 + 1(2) + 14(2)}n = 42.04

{12 + 2 + 28}n = 42.04

{42}n = 42.04

n = 42.04/42

n = 1.00009

Since n = 1, molecular formula is CH2N2

A molecule is made up of two or more atoms bonded together. True or false

Answers

Answer:

True

Explanation:

a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance.

If you start with 30 moles of O2, how many moles of SiO2 can you make?

Answers

Answer:

30moles of SiO₂

Explanation:

Given parameters:

Number of moles of O₂  = 30moles

Unknown:

Number of moles of SiO₂  = ?

Solution:

To solve this problem, we need to write the reaction expression:

       Si +  O₂  →  SiO₂  

The reaction is balanced;

      1 mole of O₂ will produce 1 mole of SiO₂

     30mole of O₂ will produce 30moles of SiO₂

Lab: Types of Chemical Reactions
Student Guide
This laboratory allows you to study various kinds of chemical reactions, including some that result in precipitates.
Lesson Objectives
• Compare and contrast synthesis, single-displacement, and double-displacement reactions.
PREPARE
Approximate lesson time is 60 minutes.
Materials
• Lab Instructions: Lab_5.08_Instructions_modified_2020
• Lab Report: Lab_5.08_Report_modified_2020
• Lab Guidelines: Lab_Guidelines_modified
LEARN
Activity 1: Types of Chemical Reactions 1
Instructions
As you read through the lesson online, use the space below to take notes.
In this laboratory, you will study different kinds of chemical reactions.
Knowing the types of reactions helps you interpret your observations.
In a synthesis reaction, two reactants unite to form a third product.
In a single-displacement reaction, one ion of a reactant bonds with the second reactant.
In a double-displacement reaction, ions of both reactants change places.
Activity 2: Types of Chemical Reactions 1
Instructions
Procedure
1. Open the Chemical Reactions Virtual Lab.
2. Click View the Tutorial and complete the tutorial to learn how to conduct the lab.
3. Close the tutorial and click begin the Lab.
Part 1 Synthesis Reaction
4. Perform the procedure, placing the magnesium strip in the flame.
5. Record your reaction.
6. Research the chemical reaction of magnesium and oxygen gas. Write an equation for the chemical reaction
that accounts for the observed reaction in this part of the lab.
7. Answer the question: What is a synthesis reaction?
8. Answer the questions on Part 1 in the Lab Report.
Part 2 Single Displacement Reaction
9. Place 1 scoop of zinc in Vial A and add 10 drops of copper (II) sulfate. Observe the reaction.
10. Place ball of aluminum in Vial B and add 10 drops of copper (II) sulfate. Observe the reaction.
11. Place 1 scoop of zinc in Vial C and add 10 drops of silver nitrate. Observe the reaction.
12. Place copper wire in Vial D and add 10 drops of silver nitrate, wait 5 minutes. Observe the reaction.
13. Complete the ta

Answers

Answer:

hope this helps

Explanation:

see pictures try to put them in order

What is the correct name for FeCl3

Answers

Ferric chloride (also called Iron chloride)

How many moles of carbon (C) are there in 92.5 g of C?

Answers

Answer:

c are there 93.5 of c yan siguro

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